Memory loss (amnesia) is unusual forgetfulness.
Alternative Names
Forgetfulness; Amnesia; Impaired memory; Loss of memory; Mild cognitive impairment
Considerations
The cause determines whether amnesia comes on slowly or suddenly, and whether it is temporary or permanent.
Normal aging may lead to trouble learning new material or requiring a longer time to remember learned material. However, it does not lead to dramatic memory loss unless diseases are involved.
Common Causes
- Aging
-
Alcoholism -
Alzheimer's disease - Brain damage due to disease or injury
- Brain growths (caused by tumors or infection)
- Brain infections such as
Lyme disease orsyphilis - Depression or emotional trauma
- Drugs such as barbiturates or benzodiazepines
-
Electroconvulsive therapy (especially if it is long-term) -
Encephalitis of any type (herpes,West Nile , Eastern Equine) - General
anesthetics such as halothane, isoflurane, and fentanyl -
Head trauma or injury - Hysteria, often accompanied by
confusion - Illness that results in the loss of nerve cells (neurodegenerative illness)
- Nutritional problems (vitamin deficiencies such as low
vitamin B12 ) -
Seizures -
Stroke ortransient ischemic attack (TIA) - Transient global amnesia
- Temporal lobe
brain surgery
















